Weld-On (SCIGRIP) 3 is formulated for cementing plexiglass acrylic (poly-methyl methacrylate) to itself. It will aslo form strong bonds with other thermoplastics such as polystyrene, butyrate, and polycarbonate to themselves.

Weld-On 3 is a water-thin cement formulated to develop high strength bonds for plexiglass acrylic. The bond is achieved by first softening the surfaces to be joined and then fusing them together with the dissipation of the solvent. The initial bond forms within minutes and increases in strength over time. Weld-On 3 (@ 73°F) reaches 80% of it's ultimate bond strength in 24 hours. Under certain conditions, especially with high humidity, a white mark on the plastic (commonly called blushing) may sometimes occur with Weld-On 3. Where a more blush resistant cement and longer open time is required, Weld-On 4 is recommended.

BEFORE USING WELD-ON 3: click on the links below to read the Technical Data Sheet pdf, the Safety Data Sheet pdf. Also before use, read the instructions on the container. When applying any solvent, work in a well ventilated area and avoid contact with skin, eyes, and clothing (safety glasses, gloves, and impervious apron should be used). Keep out of the reach of children. This product is intended for use by skilled individuals at their own risk. For more information on directions for use, safety and environmental precautions, please read the Technical Data Sheet & Saftey Data Sheet.